Rotary safety-razor.



G. N. MOORE.

ROTARY SAFETY RAZOR.

APPLIOATION FILED DEG. 21, 1910.

1,068,068. Patented July 22, 191s.

fw. y Y Y I 2 SHEETS-SHEET 1.

G. N. MOORE.

ROTARY SAFETY RAZOR.

APPLIGATION FILED 1330.21, 1910.

1,068,068. Patented July 22, 1913.

2 SHBETS-SHBBT 2 F vvv d i figg; f j// 35 3.7 f .10 36? 56 34 38 WITNESSES: NVENTR I I s BY A A @TV1 @7 i, mw!

M ATTORNEYJ UNITED STATES PATENT OFFICE.

GEORGE NICHOLS MOORE, 0F DUMONT, NEW JERSEY. ASSIGNOR T0 ROTARY APPLI- ANGES COMPANY, OF NEW YORK,- N. Y., A CORPORATION OF NEW YORK.y

ROTARY snrnmmmizon.

Specilication of Letters latent.

Patented July 22, 1913.

Application filed December 21, 1910. Serial No. 598,613.

To all whom t 'may concern.'

Be it' known that I, GEORGE NICHOLS Moolen, a citizen of the United States, residing at Dumont, county of Bergen, and State of New Jersey, have invented certain new and useful Improvements in Rotary Safety- Razors, of which the following is a full, clear, and exact description.

In the o eration of shaving it is well understood t at the bestl results are obtainedv by what is commonly ydescribed as a sliding or diagonal stroke, that is, a movement perpendicular to the edge of the blade combined with a movement parallel to the edge. With the ordinary razor this requires great skill on the part of the user, and even with so-called safety razors considerable practice is ,required to use the diagonal stroke to the best advantage.

My present invention is designed primarily to provide a razor, of the safety type, in which a movement of the blade parallel to its'eutting edge is produced without effort or attention on the part of the user, so that all he has to do is to move the blade over the face in a direction perpendicular to the edge of the blade, thus giving a diagonal stroke of the utmost effectiveness and removing the beard with the least possible discomfort.

lll)

ln carrying out the invention in the preferred manner the razor blade is in the form of a circular disk having a continuous nonserrated cutting edge, and this blade is rotated with great rapidity by power-driven means, a suitable guard for the blade ,being provided around the edge thereof.

An embodiment of this type is illustrated in the accompanying drawings, in which Figure l is a side View of the complete razor. F ig. 2 is a longitudinal section of the same, showing also the preferred type of guard for the blade. Fig. 3 is a top plan view with the blade iii place, and F ig. 4 is a similar view with the blade and blade-clamp removed. Figs. 5, 6 and 7 are cross-sec tions on lines 5-5, 6-6, and 7M?, respectively. ligs. 8 to 14 inclusive are detail views illustrating various methods of securing the disk blade to the driving shaft.

The blade of the razor is in the form of a circular disk 10, and is removably mounted- 0f an electric message machine, with which barber shops are usually equipped.

The spindle 1l revolves in an outer sleeve or handle 13 terminating in an outwardly extendmg Iiange or guard encircling the blade 10. 4 t t In the form shown in Fig. 1 the guard is non-serrated, as shown at 14, but I prefer the form illustrated at l5 in Fig. 2, in which the guard is provided with radial teeth. In either case the guard may be provided with apertures 16 for discharging the lather which might otherwise accumulate under the blade.

The shaft or spindle 11 is threaded in the end of the flexible shaft, as shown in F ig. 2, and is rigidly locked thereto by a lock-nut 17. short distance from its threaded end the spindle is provided with an enlargement o-r collar 18, mounted in the end of a thimble 19 which is removably secured on the sleeve 20, encircling the lowei1 end of the spindle, by a ring 21 threaded on the thimble and having an inwardly extending flange 22 engaging an outwardly extending liange 2 3 .on said sleeve. v,The spindle is threaded on opposite sides of the bearing in which the collar 18 rotates, and is held against axial movement in said bearing by tw o nuts 24 25, on opposite sides thereof, said nuts being locked in adjusted position by means of two jam nuts 26, 27.

In order to regulate the space between the edge of the blade and the guard, the sleeve or handle 13, which carries the guard, is threaded in the thimble 19, so that by screw- .ing the handle out or into the thimble the guard can be brought as Close to or as far from the blade as desired. When the guard is in the desired position of adjustment the handle or sleeve 13 is locked to the thimble by means of the jam nut 28.

The blade may be secured to the spindle 11 in a variety of ways. For instance, the spindle may have its upper end shouldered to receive a small supporting ring 29, the upper edge of which is rabbeted to iit a oentral aperture in the blade. The latter is then clamped lirmly in place by a rounded cap 30, having a stem 31 (shown in dotted lines in Figs. 2 and 8) threaded into the end of the spindle. In the top of the cap it is provided with a pair of apertures 32 for engagement by a suitable spanner or key sired, a set screw 33 may ,be provided in the side of the handle 13, by which the spindle 11 may be held against rotation While the cap or clamp 30 is being turned to tighten or loosen it. In the construction shown in Fig. 10 the underside of the blade is formed with a collar 34 and the central aperture 35 therethrough is threaded to engage the threaded end 36 of the spindle. A similar method is illustrated in Fig. 11, in which the blade has a thickened center, with a threaded opening 37 to engage the threaded end 38 of the spindle. In Figs. 12 and 13 the spindle is formed with a short stem 39 surmounted by a transverse head 40, and the blade is provided with a central slot 41 through which the head 40 passes. The blade is then given a quarter turn, bringing the sides of the slotunder the ends of the head. In this form the blade should be thick enough to lit snugly under the spindle head 40. In Fig. 14, the blade has a similar slot, 42, to receive the split end of the spindle 43, the ends of the spindle forks being notched, as shown, to engage the ends of the slot, and the resiliency of the met-al of which the spindle is composed being suicient to hold the forks firmly against the ends of the slot. Around the spindle is a slide 44 having a finger piece 45 extending outthrough a slot 46 in the side of the handle 47 just below the blade guard. By raising this slide the spindle forks are drawn together, thereby releasing the blade as will be readily understood. The slide is normally held in its lowermost position by a coil spring 48 encircling the spindle.

The method of using the razor will be readily understood. 4

The blade, rotated by the driving shaft, is moved over the face, sufficient pressure being used to bring the blade and guard into such closeness of contact with the skin as will give the results desired. Inasmuch as the blade is in rapid rotation it Will be seen that its cut cannot be a scrape. On the contrary, it must give a slicing cut, since the peripheral speed is very great in comparison With the rate at Which the blade is moved over the face. This means that the cutting qualities of the blade are utilized to the best possible advantage, so that if the blade is sharp enough to remove the beard v it will do so without pulling.

It is to be understood that the construction herein specifically illustrated and described represents merely the preferred form of the invention, which may be embodied in other forms without departure from its proper spirit and scope as defined by the appended claims. i

I claim:

1. In a razor of the kind described, .the combination of a guard, a blade of disk form having a continuous non-serrated cutting edge in juxtaposition to the guard, means for rotating the blade, and means for varying the space between the guard and the cutting edge of the blade.

2. In a razor of the kind described, the combination of a guard, a tubular handle on which the guard is mounted, a spindle rotatably mounted in the handle, a blade of disk form having a continuous non-serrated cutting edge mounted on the end of the spindle adjacent to the guard, and means for varying the space between the guard and the edge of the blade.

3. In a razor of the kind described, the combination of a tubular handle, a guard thereon, a blade of disk form having a continuous non-serrated cutting edge adjacent to the guard, a spindle rotatably mounted in the handle and connected with the blade to rotate the same, and means for adjusting the blade above and below the upper surface of the guard. Y

4. In a razor of the kind described, the combination of a rotary spindle, a blade of diskv form having acontinuous non-serrated cutting edge, means for detachably connecting the blade to one end of the spindle, and a guard encircling the spindle, the upper surface of said guard being adjustable above and below the plane of the cutting edge of the blade.

5. /In a razor ofthe kind described, the combination of a tubular handle, a guard on one end of the same, a spindle rotatably mounted in the handle, ablade of disk form, having a continuous non-serrated cutting edge, mounted on the end of the spindle adjacent to the guard, and means for adjusting the handle axially of the spindle to vary the space between the guard and the edge of the blade.

6. In a razor of the kind described, the combination of a driving shaft, a sleeve encircling the same, a tubular handle carried by the sleeve and axially adjustable therein, means for locking the handle in adjusted position, a spindle rotatably mounted in the handle and connected at one end to the driving shaft for rotation thereby, a blade of disk4 form connected With the other end of the spindle, and a guard for the blade, carried by thehandle.

7. In a razor of the kind described, the combination of a flexible driving shaft, a relatively stationary sleeve concentric therewith, a tubular handle in axial alinement with the sleeve and screw-threaded therein, a lock-nut on the handle and adapted to engage the end of said sleeve to lock the handle rigidly thereto, a spindle rotatably mounted in the handle and onnected at one end to the driving shaft or rotation thereby, a blade of disk form, having a continuous nonserrated cutting edge, removably mounted ,on the other end of the spindle, and a guard @for the blade, carried by the handle.

v contmuous cutting edge, a guard surrounding said cutting edge, means for ad'usting the plane of the cutting edge of sai blade above and below the upper surface of said guard, and means for rotating the blade.

9. In a razor Of the class described, the combination of a relatively stationary sleeve or handle, a spindle rotatively mounted in said sleeve, a blade of disk form removably secured uponone end of said spindle and adapted to rotate therewith, a guard on said handle for said blade, means adapted to be connected tothe other end of said spindle to rotate the'same, andl means for adjusting the klade beyond `the upper surface of the ar guIn testimony whereof I aiix my signature in the presence of two subscribing Wit- Witnesses: l

E. S'rammnry CLARKE, S. S. DUNHAM. 

